Shuttle check



Dec.z15, 1942. N. LA MARCH E' SHUTTLE CHECK Filed Aug. 4, 1942 2 Sheets-Sheet 1 mzza manhe N. LAMARCHE SHUTTLE CHECK Dec. 15, 1942.

Filed Aug. 4, 1942 2 Sheets-Sheet 2 Patented Dec. 15, 1942 UNITED STATES PATENT OFFICE SHUTTLE CHECK Napoleon Lamarche, Lowell, Mass. Application August 4, 1942, Serial No. 453,572

8 Claims.

' The invention relates to frictional checks for the shuttles of looms, the check being of the general type having a horizontally elongated brake shoe and spring means for pressing the same inwardly for frictional contact with the shuttle.

One object of the invention is to provide a new and improved construction which may be readily mounted upon a conventional loom without making alterations in the latter.

A further object is to provide a novel construction to facilitate mounting of the elongated friction brake shoe.

Another aim is to provide simple, readily adjusted and relatively silent stop means for limiting inward movement of the brake shoe under the influence of the spring means.

A still further object is to provide a rather simple and inexpensive construction, yet one which will be highly efficient and desirable, will operate smoothly and by so doing will tend to reduce difliculties heretofore encountered with numerous kinds of checks, with the result that better material may be woven on the loom.

.ith the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawings.

Fig. 1 is a side elevation showing the invention applied to a portion of the loom lay at the magazine end thereof.

Fig. 2 is a top plan view partly in horizontal section of the parts shown in Fig. 1.

Fig. 3 is a horizontal sectional view on line 3--3 of Fig. 1.

Fig. 4 is a vertical section on line 4-4 of Fig. 2.

Fig. 5 is a side elevation showing the invention and its association with one of the cells of the shuttle box at the box end of the lay.

Fig. 6 is a top plan View of the parts shown in Fig. 5.

Fig. 7 is a vertical section on line of Fig. 6.

Fig. 8 is a horizontal section on line 8-8 of Fig. 5.

Preferred features of construction have been illustrated and will be rather specifically described, with the understanding, however, that within the scope of the invention as claimed, variations may be made.

The construction shown in Figs. 1, 2, 3 and 4 (for the magazine end or side of the loom) will first be described.

The horizontally elongated brake shoe is denoted at It on the drawings, said shoe preferably having a lining ll of leather or the like secured in place by rivets l2 and I3 or in any other appropriate way. The shoe ||l overlies a portion of the lay i4 and this lay is provided with a lateral lug l5 which carries a rigid upstanding guide stud I6, said stud having a nut i! or other shoulder abutting the upper side of said lug l5, and a nut l8 abutting the lower side of said lug. Near the lug l5, the lay is provided with an upstanding portion 9, and secured to said lay at a point longitudinally spaced from said lug, is a guide yoke 20.

One end of the brake shoe I0 is provided with two lateral vertical walls 2| and 22 which project laterally outward therefrom in overlying relation with the lug IS, the wall 2| being preferably integral with said shoe l0 while the wall 22 may well be secured to said shoe by screws or the like 23. This wall-carrying end of the shoe I0 is also provided with a lug 24 which projects longitudinally therefrom, this lug being in the present disclosure integral with the wall 22 and extending across and beyond the wall 2|, in contact with the outer extremity of the latter. The two walls 2| and 22 are provided with spaced parallel inner faces which pivotally and slidably engage a sleeve 25 with which the stud I6 is provided, said stud and its sleeve being received between the two walls as shown most clearly in Fig. 3. Underlying these walls, I provide a horizontal level-plate 26 which lies upon the lug l5 and adjacent portion of the lay l4, said level-plate having an opening 21 which receives the nut or other enlargement I! of the stud l6. One of the edges of this plate is in abutting relation with the inner end of the upstanding portion IQ of the lay I4, and the opposite edge of said plate is in similar relation with a shoulder 28 on the lower edge of the brake shoe ID, the plate being thus held against horizontal swinging movement about the enlargement I1.

A horizontal stop screw 29 is threaded adjustably through the lug 24 and is provided with a lock nut 30, said screw being instrumental in limiting the inward movement of the wall-carrying end of the brake shoe ID, in a manner to be hereinafter explained.

A hold-down finger 3| overlies at least one of the walls (2| in the present disclosure) and "is provided with a vertical attaching plate 32 secured against the outer side of the upstanding lay portion I9, by means of an attaching screw 33. The head 34 of this attaching screw 33 and the head 35 of the stop screw 29 are in close relation with each other as seen more particularly in Fig. 3, permitting said heads to cooperate in limiting the inward movement of the wall-carrying end of the brake shoe Hi. It is preferable to inset a fibre plug 36 in the screw head to more or less noiselessly abut the head 34 of the screw 33.

The member 31 is merely a knob secured to the lug 24 for use in manually pulling the brake shoe l0 outwardly when required. 3

The end of the shoe l6 remote from the walls 2| and 22, is preferably reduced in the form of a finger 38 which is slidably engaged with the guide yoke 20. Between the ends of said brake shoe, a suitable spring 39 is employed to press said shoe yieldably inward, said spring being received in the upper socket portion 40 of a bracket 41 which is suitably secured to the lay I4. An adjusting screw 42 is provided to adjust the strength of the spring 39.

The construction for the box side or end of, the loom may be somewhat simplified over that above described, and one rigid lateral wall 43 on the brake shoe 44 will here suffice, said wall being provided with a rigidly attached outwardly projecting lug 45 at its outer end. Also at this end of the loom, it is not essential that the brake shoe 44 be equipped with a lining of leather or the like. The wall 43 is received between the usual upper and lower lugs 48 and ll on one of the cells 48 of the loom box. A vertical pin 49 passes through these lugs and is received in the angle between the wall 43 and the shoe 44, said pin being in pivotal and slidable contact with said wall. The outer side of this wall is in abutting relation with the usual vertical portion 55 of the box, said portion 50 and the pin 49 thus holding the brake shoe 44 against longitudinal shifting. The portion 50 is in opposed relation with the inner side of the lug 45 and this lug carries a stop screw 5! which is preferably identical with the stop screw 29. The fibre plug 52 of this stop screw is cooperable with the head of an attaching screw 53 which secures a spring device 54 to the box portion 50, said spring device acting against the brake shoe 44 to press it yieldably inward. This spring device is preferably in the form of a spring arm, one end of which carries an adjustable screw 55 bearing against the outer side of the brake shoe 4 3.. The other end of this spring arm is provided with a return bend which straddles but is spaced from the lug 45, the extremity of said return bend being fastened against the box portion 50 by means of the screw 53.

It is preferable to form the spring device 54 from a single piece of spring wire so bent that a loop 56 will be provided for the reception of the screw 53, said loop being received between two ribs 51 which are already found on the outer side of the box portion 55. The free ends of the piece of wire from which the spring device is formed, are preferably bent inwardly toward each other as seen at 53 in Fig. 7, and the screw 55 is received between these ends as seen in Fig. '7. Washers 59 are provided on the screw 55 at opposite sides of the spring ends 53, nuts 60 are threaded on said screw to clamp said spring ends tightly between said washers, and one of these washers is preferably bent around said spring ends as shown at iii to prevent lateral separation of them. The conventional head 62 of the screw 55 is disposed at its inner end and is in contact with the out-er side of the friction shoe M. The other end of this screw is preferably provided with a knob 63 which may be used when it is desired to release the spring pressure against the shoe 44.

The end of the shoe remote from the lug 45 is received between the usual vertically spaced lugs 64 of the box and is held against any excessive outward movement by means of a pin 65 passing through said lugs.

t will be seen from the foregoing that novel and advantageous provision has been made for carrying out the objects of the invention, and

while preferred features have been illustrated, attention is again invited to the possibility of making variations within the scope of the invention as claimed.

I claim:

l. A shuttle check comprising a horizontally elongated brake shoe having an inner surface to frictionally engage the shuttle, spring means for pressing said shoe inwardly, one end of said shoe having a lateral wall rigidly connected therewith and projecting horizontally outward therefrom, said lateral wall having a vertical side face in a plane transverse to the length of said shoe, said one end of said shoe also having a lug rigidly connected with the outer end of said lateral wall and projecting longitudinally outward therefrom. a fixed vertical guide member against which said vertical side face of said lateral wall contacts slidably and pivotally, an adjustable horizontal stop screw threaded transversely through said lug, a fixed stop at the inner end of said stop screw and cooperable therewith in limiting the inward movement of said one end of said shoe under the influence of said spring means and fixed guide means slidably receiving the other end of said shoe.

A structure as specified in claim 3.; said screw having a head at its inner end, and a cushioning plug inset in and projecting from said head to abut said fixed stop.

3. A structure as specified in claim 1; said one end of said shoe having a second lateral wall near the aforesaid wall, said second wall being provided with a vertical side face opposite and parallel with the aforesaid side face, said fixed vertical guide member being between the two lateral walls and contacting with said side faces thereof.

4. A shuttle check comprising a horizontally elongated brake shoe having an inner surface to frictionally engage the shuttle, spring means for pressing said shoe inwardly, one end of said shoe being provided with an integral vertical wall projecting laterally outward therefrom, another vertical wall parallel with and spaced inwardly from the first mentioned wall, said other wall being rigidly secured to said shoe, a vertical lug integral with the outer end of said other wall and projecting longitudinally therefrom across and beyond the outer end of said first mentioned wall, a fixed support underlying said walls, a guide stud secured to said support, said stud projecting upwardly between and in contact with said walls, a stop screw threaded through said lug, a fixed stop cooperable with said stop screw in limiting the inward movement of said one end of said shoe under the influence of said spring means. and fixed guide means slidably receiving the other end of said shoe.

5. A shuttle check comprising a horizontally elongated brake shoe having an inner surface to frictionally engage the shuttle, spring means for pressing said shoe inwardly, one end of said shoe having two parallel lateral walls rigidly connected therewith and projecting horizontally outward therefrom. said walls having opposed inner surfaces disposed in vertical planes, a fixed support underlying said walls, a guide stud secured to said support and projecting upwardly therefrom between and in contact with said opposed surfaces of said walls, said one end of said shoe being provided with a lug projecting outwardly therefrom in a vertical plane extending longitudinally of said shoe, a hold-down finger overlying one of said walls and having a vertical attaching plate spaced inwardly from said lug, the aforesaid support being provided with an upstanding portion in contact with said attaching plate, an attaching screw extending through said attaching plate and securing it to said upstanding portion of said support, the head of said screw being disposed toward said lug, a stop screw threaded through said lug and cooperable with said screw head to limit the movement of said one end of said shoe under the influence of said spring means, and fixed guide means slidably receiving the other end of said shoe.

6. A shuttle check comprising a horizontally elongated brake shoe having an inner surface to frictionally engage the shuttle, spring means for pressing said shoe inwardly, one end of said shoe having two parallel lateral walls rigidly connected therewith and projecting horizontally outward therefrom, said walls having opposed inner surfaces disposed in vertical planes, a fixed support underlying said walls, a guide stud secured to said support and projecting upwardly therefrom between and in contact with said opposed surfaces of said walls, said stud having an enlargement abutting the upper side of said support, a horizontal plate lying on said support and directly supporting said walls, said plate having an opening receiving said enlargement, and guiding means receiving the other end of said shoe.

7. A shuttle check comprising a horizontally elongated brake shoe having an inner side to frictionally engage the shuttle, one end of said shoe having a vertical lateral wall projecting horizontally outward therefrom, the outer end of said wall being provided with a lug projecting longitudinally outward therefrom, a vertical pin in the angle between said shoe and wall and engaged pivotally and slidably by the latter, a support having fixed lugs over and under said wall and carrying said pin, said support having a vertical portion in spaced opposed relation with the inner side of the aforesaid lug and in abutting relation with the outer side of said wall, a spring device mounted on said support and engaged with said shoe to press the same inwardly, a stop screw threaded through said lug, a fixed stop carried by said vertical portion of said support and cooperable with said stop screw to limit the inward movement of said shoe, and guide means on said support slidably receiving the other end of said shoe.

8. A shuttle check comprising a horizontally elongated brake shoe having an inner side to irictionally engage the shuttle, one end of said shoe having a vertical lateral wall projecting horizontally outward therefrom, the outer end of said wall being provided with a lug projecting longitudinally outward therefrom, a vertical pin in the angle between said shoe and wall and engaged pivotally and slidably by the latter, a support having fixed lugs over and under said wall and carrying said pin, said support having a vertical portion in spaced opposed relation with the inner side of the aforesaid lug and in abutting relation with the outer side of said wall, a spring arm having a free end engaged with said shoe to press the same inwardly, the other end of said spring arm having a return bend straddling and spaced from said lug, an attaching screw securing said other end of said spring arm to said vertical portion of said support, a stop screw threaded through the aforesaid lug and disposed in abutting relation with said attaching screw to limit the inward movement of said one end of said shoe,-and guide means on said support slidably receiving the other end of said shoe.

NAPOLEON LAMARCHE. 

